watermark.java Source code

Introduction

Here is the source code for watermark.java

Source

/**
* Watermark in text
* requires itextpdf-5.5.4.jar
* @author jaypark@gmail.com 2014.12.24 (yes it's christmas)
*/
import java.io.FileOutputStream;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Element;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.Font;

import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.ColumnText;

public class watermark {
    // for korean
    static String FONTFILE = "./NanumGothic.ttf"; // korean font
    static String LIC = "?  %s ? ? .";

    // for english
    //static String FONTFILE = "./times.ttf";
    //static String LIC = "This document is licensed to %s.";

    static BaseColor TCOLOR = new BaseColor(130, 130, 130);

    public static void main(String[] args) {
        try {
            PdfReader reader = new PdfReader(args[0]);
            PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(args[1]));
            stamp.getWriter().setCompressionLevel(9); // without this code it'll 3 times bigger

            int bottom_margin = Integer.parseInt(args[2]);
            String lic = String.format(LIC, args[3]);

            BaseFont bf = BaseFont.createFont(FONTFILE, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
            Chunk c = new Chunk(lic, new Font(bf, 7, Font.NORMAL, TCOLOR));
            c.setTextRenderMode(PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE, 1 / 800f, null);

            Phrase phrase = new Phrase(c);

            int pages = reader.getNumberOfPages();
            int xpos = 90;
            for (int i = 1; i <= pages; i++) {
                if (i % 2 == 0)
                    xpos = 160;
                else
                    xpos = 90;

                PdfContentByte under = stamp.getUnderContent(i);
                ColumnText.showTextAligned(under, Element.ALIGN_LEFT, phrase, xpos, bottom_margin, -0);
            }

            stamp.setFullCompression(); // without this code it'll 3 times bigger
            stamp.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}